Filters, Antenna filters
The short wave, but also other bands are affected by interferences. Some of these stem from natural processes, for example noise from thunderstorms or processes in the ionosphere, others are man-made disturbances. These are caused by nearby transmitters, by misaligned transmitter signals and also by overstrained receiver inputs.
In most cases, filters can be a great help here. A high frequency filter limits the bandwidth that is received, for example from the antenna to the receiver, or from the power amplifier to the antenna. In this way unnecessary components of the signal are filtered out. Modern SDR receivers implement the filter technology in the form of algorithms in the processor, but practice has shown that classical filters still offer many possibilities to improve reception.
Other filter technology is used to suppress interference from devices, for example in the case of direct radiation. Here WiMo offers a wide range of ferrites, which are not only used to build transformers, but can also be used as chokes to effectively prevent direct radiation.
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Elad bandpass filter, 160 to 12m and FM
Elad bandpass filter shortwave amateur radio bands and VHF, suitable for FDM-DUO, FDM-DUO-R, QSF-06, SPF-08 and FDM-S3
In stock, shipped in 1 to 2 days
As low as: €22.00incl. VAT, plus shipping €18.49 -
Folding Ferrite toroid up to 6,1mm cable diam.
Round Ferrite core 6,1mm
In stock, shipped in 1 to 2 days
€4.30incl. VAT, plus shipping €3.61 -
Folding Ferrite toroid up to 7,5mm cable diam.
Functions as a final noise filter
In stock, shipped in 1 to 2 days
€4.80incl. VAT, plus shipping €4.03 -
Elad SPF-08 Modular Preselector
Elad Pre-Selector with pass-thru board.
In stock, shipped in 1 to 2 days
€159.00incl. VAT, plus shipping €133.61 -
€43.70incl. VAT, plus shipping €36.72
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€27.90incl. VAT, plus shipping €23.45
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High pass 30 MHz and WFM broadcast notch filter 87-109 MHz
High pass and WFM notch filter
Available from 08.12.2023
€27.90incl. VAT, plus shipping €23.45 -
Elad High/Lowpassfilter 500kHz/1700kHz
Elad Low/Highpassfilter 500kHz/1700kHz, for FDM-DUO, FDM-DUO-R, QSF-06, SPF-08 and FDM-S3
In stock, shipped in 1 to 2 days
As low as: €22.00incl. VAT, plus shipping €18.49 -
Bandpass Filter 50-51 MHz 4000W
6m bandpass filter with active cooling
In stock, shipped in 1 to 2 days
€352.00incl. VAT, plus shipping €295.80 -
€147.90incl. VAT, plus shipping €124.29